Home / 20,630.97-30,918.74-11,256.95

Finding the Fourth Proportional to 20,630.97, 30,918.74 and 11,256.95

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Solution

The fourth proportional to 20,630.97, 30,918.74 and 11,256.95 is: 16,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.97 : 30,918.74 = 11,256.95 : x
  2. Step 2: Convert to fraction form
    20,630.97/30,918.74 = 11,256.95/x
  3. Step 3: Cross multiply
    20,630.97x = 30,918.74 × 11,256.95
  4. Step 4: Simplify right side
    20,630.97x = 348,050,731.26
  5. Step 5: Solve for x
    x = 348,050,731.26/20,630.97
  6. Step 6: Final answer
    x = 16,870.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.